How Do You Make Mother Glass?

TV screens are cut from a massive TV screen called The Mother Glass. Each sheet can be dozens of feet, the Mother Glass. And so you can cut 10, 15 TVs out of that. How they make glass? It's basically float glass. You could put a load of glass on a load of molten tin and it sits perfectly on top of it. That's still how they make flat glass ten years ago. There's more than one factory in China for making LCD screens. This has to have class 1 clean rooms because it's so fine. When you're making these very specialized screens, you can't get a single speck of dust. They'll go up many, many stories